prattle

verb

1. (ambitransitive)To speak incessantly and in an inconsequential or childish manner; to babble.

   “And as E. Rushmore Coglan prattled of this little planet I thought with glee of a great almost-cosmopolite who wrote for the whole world and dedicated himself to Bombay.”

   “I looked across at Anna, and I noticed that her eyes had grown strangely blank, without expression. I felt instinctively that the subject brought up by Victor was one she would not have chosen. Victor, insensitive to this, went prattling on.”

noun

1. (uncountable)Silly, childish talk; babble.

   “Mere prattle without practice is all his soldiership.”

   “[...] if you fatigue people by haying them always present, if you encourage or repeat their prattle and their sports; [...]”